Raising and forming machine for metallic plate-work



(No Model.)

8 L R. B. SWAIN. RAISING AN'D FORMING MACHINE FOR METALLIC PLATE WORK.

No. 440,888. Patented Nov. 18, 1890,,

INVENTOR WITNESSES UNITED STATES PATENT OFFIGE.

RETURN B. SIVAIN, OF PHILADELPHIA, PENNSYLVANIA.

RAISING AND FORMING MACHINE FOR METALLIC PLATE-WORK.

SPECIFICATION forming part of Letters Patent No. 440,888, dated November18, 1890.

Application filed May 1, 1890. Serial No. 350,231. (No model.)

To 60% whom, it may concern.-

Be it known that I, RETURN B. SWAIN, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania,have invented certain new and useful Improvements inRaising and Forming Machines for Metallic-Plate \Vork; and I do herebydeclare the following to be a sufficiently full, clear, and exactdescription thereof as to enable others skilled in the art to make anduse the said invention.

This invention relates to machines for raising and forming vessels fromplates of ductile metal, and has for its object the facilitating of suchwork by relieving the workmen of the labor of hammering, and byexpeditiously changing the dies as the raising of the work progresses;and to this end it consists in a combination of a power-actuated hammerwith a mechanism for successively bringing each of the series of diesunder the hammer, as is shown in the drawings annexed, and fullydescribed in this specification.

Referring to the drawings, Figure 1 shows a side elevation of thisinvention. Fig. 2 shows a front elevation thereof, and Fig. 3 shows aplan thereof.

The same reference marks indicate like parts in the several figures.

A represents the hammer reciprocated vertically in guides A and A bymeans of a lever B, pivotally attached'to its upper end, which lever Bis pivoted to a vibrating fulcrum B and receives reciprocating motionfrom a connecting-rod O, pivotally attached to the lever B by a clutch,adjustable lengthwise on the rod 0 from the connected crank O in a shaft0 driven by a pulley D and belt B, tightened by a riding pulley Bsupported and turning upon an arm D of the treadlelever D pressedagainst the belt D by the downward motion to a treadlc-lever D An arm Dof the treadle D presses the brakeshoe D against the balance-wheel C onthe shaft 0 by the reaction of the spring D attached to thetreadle-lever D Supported on the frame of the machine and located underthe hammer A is a table E, susceptible of a gradual intermittentrotation upon its central vertical axis. In this table E are secureddies or molds E E E E, &c., having different degrees of concavity andalso a fiat surface E for planishing. This table E may be turned by thehand of the attendant, but is preferably rotated by a pawl F and ratchetF and held by a latch or stop F arranged to engage in notches F in thetable E, so located in relation to the sev eral dies E E E E, &c., andthis flat surface E as to hold them successively under the hammer A. Theseveral dies E E E E (be, are successively of greater depth or ofshorter radii of concavity.

The manner of using this machine is as follows: The workman places theflat plate of 6 ductile metal upon the die E, and by his foot,depressing the treadle-lever D tightens the band D by the pressure ofthe riding-pulley D thereon, and thus causes the shaft C to revolve withgreater or less rapid- 7o ity, according to the pressure exerted uponthe band by the pulley D. The crank O and connecting-rod C impart areciprocating motion to the lever D, which reciprocates the hammer Avertically with more or less force, according to the speed. The workmanmoves the plate under the hammer until it assumes the form of the die E.He next moves the table around, so as to bring the die E under thehammer, and the plate of metal is subjected to its action. Thisoperation is repeated with the several dies in succession until themetal has assumed the desired depth of form. The fiat portions of thearticle are planished on the face G by the hammer A.

' By means of this machine work can be raised more rapidly than by handand with much less fatigue to the workman.

Having described my invention, what I claim is 1. The hammer A,reciprocated by the lever B and crank C, in combination with a series ofdies E E E E secured to the intermittently-rotating table and arrangedto operate substantially as set forth.

2. The hammer A, reciprotated by the lever B and crank O, in combinationwith the dies E E and E and planishing-surface G,

secured to the intermittently-rotating table, shoe D, arranged andconstructed as shown and arranged, as shown, to operate as set forVarying the speed and force of blows, subforth. stantially as set forth.

3. The guided hammer A, reeiprocated by RETURN B. SXVAIN. 5 the lever B,rod 0, crank C, and counter- \Vitnesses:

balanced Wheel C in combination with the J. DANIEL EBY,

treadle-lever D arm D spring D and brake- WALTER J. BUDD.

